1<?xml version="1.0" encoding="utf-8"?>
2<page xmlns="http://projectmallard.org/1.0/" type="topic" id="mime-types" xml:lang="tr">
3
4  <info>
5    <link type="guide" xref="software#management"/>
6    <link type="seealso" xref="mime-types-application"/>
7    <link type="seealso" xref="mime-types-application-user"/>
8    <link type="seealso" xref="mime-types-custom-user"/>
9    <revision pkgversion="3.12" date="2014-06-17" status="review"/>
10
11    <credit type="author copyright">
12      <name>Petr Kovar</name>
13      <email>pknbe@volny.cz</email>
14      <years>2014</years>
15    </credit>
16
17    <include xmlns="http://www.w3.org/2001/XInclude" href="legal.xml"/>
18
19    <desc>MIME types are used to identify the format of a file.</desc>
20  </info>
21
22    <title>What are MIME types?</title>
23    <p>
24      In GNOME, MIME (<em>Multipurpose Internet Mail Extension</em>)
25      types are used to identify the format of a file. The GNOME Desktop
26      uses MIME types to:
27    </p>
28    <list>
29      <item>
30        <p>
31          Determine which application should open a specific file format by
32          default.
33        </p>
34      </item>
35      <item>
36        <p>
37          Register other applications that can also open a specific file format.
38        </p>
39      </item>
40      <item>
41        <p>
42          Provide a string describing the type of a file, for example,
43          in a file properties dialog of the <app>Files</app>
44          application.
45        </p>
46      </item>
47      <item>
48        <p>
49          Provide an icon representing a specific file format, for
50          example, in a file properties dialog of the <app>Files</app>
51          application.
52        </p>
53      </item>
54    </list>
55    <p>
56      MIME type names follow a given format:
57    </p>
58<screen>
59<var>media-type</var>/<var>subtype-identifier</var>
60</screen>
61<p>
62      <sys>image/jpeg</sys> is an example of a MIME type where
63      <sys>image</sys> is the media type, and <sys>jpeg</sys>
64      is the subtype identifier.
65</p>
66    <p>
67      GNOME follows the <em>freedesktop.org Shared MIME Info</em>
68      specification to determine:
69    </p>
70    <list>
71    <item>
72      <p>
73        The machine-wide and user-specific location to store all MIME type
74        specification files.
75      </p>
76    </item>
77    <item>
78      <p>
79        How to register a MIME type so that the desktop environment knows which
80        applications can be used to open a specific file format.
81      </p>
82    </item>
83    <item>
84      <p>
85        How the user can change which applications should open what file formats.
86      </p>
87    </item>
88    </list>
89    <section id="mime-database">
90      <title>What is the MIME database?</title>
91      <p>
92        The MIME database is a collection of all MIME type specification files
93        that GNOME uses to store information about known MIME types.
94      </p>
95      <p>
96        The most important part of the MIME database from the system administrator’s
97        point of view is the <file>/usr/share/mime/packages/</file>
98        directory where the MIME type related files specifying information on
99        known MIME types are stored. One example of such a file is
100        <file>/usr/share/mime/packages/freedesktop.org.xml</file>, specifying
101        information about the standard MIME types available on the system by
102        default. That file is provided by the <sys>shared-mime-info</sys>
103        package.
104      </p>
105    </section>
106    <section id="mime-types-more-information">
107    <title>Get more information</title>
108    <p>
109      For detailed information describing the MIME type system, see the
110      <em>freedesktop.org Shared MIME Info specification</em> located at the
111      freedesktop.org website:
112    </p>
113    <list>
114      <item>
115        <p>
116           <link href="http://www.freedesktop.org/wiki/Specifications/shared-mime-info-spec/">
117           http://www.freedesktop.org/wiki/Specifications/shared-mime-info-spec/</link>
118        </p>
119      </item>
120    </list>
121    </section>
122</page>
123